US10405088B2 - Combination phase plug, and compression driver and speaker using same - Google Patents

Combination phase plug, and compression driver and speaker using same Download PDF

Info

Publication number
US10405088B2
US10405088B2 US16/001,492 US201816001492A US10405088B2 US 10405088 B2 US10405088 B2 US 10405088B2 US 201816001492 A US201816001492 A US 201816001492A US 10405088 B2 US10405088 B2 US 10405088B2
Authority
US
United States
Prior art keywords
phase plug
fins
cone
gaps
compression driver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US16/001,492
Other versions
US20190174224A1 (en
Inventor
Zhi Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tymphany Acoustic Technology Huizhou Co Ltd
Original Assignee
Tymphany Acoustic Technology Huizhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tymphany Acoustic Technology Huizhou Co Ltd filed Critical Tymphany Acoustic Technology Huizhou Co Ltd
Assigned to PREMIUM LOUDSPEAKERS (HUI ZHOU) CO., LTD. reassignment PREMIUM LOUDSPEAKERS (HUI ZHOU) CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, ZHI
Assigned to TYMPHANY ACOUSTIC TECHNOLOGY (HUIZHOU) CO., LTD. reassignment TYMPHANY ACOUSTIC TECHNOLOGY (HUIZHOU) CO., LTD. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: PREMIUM LOUDSPEAKERS (HUI ZHOU) CO., LTD.
Publication of US20190174224A1 publication Critical patent/US20190174224A1/en
Application granted granted Critical
Publication of US10405088B2 publication Critical patent/US10405088B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/34—Directing or guiding sound by means of a phase plug

Definitions

  • This application relates to phase plug structures, and in particular, to a combination phase plug, and a compression driver and a speaker using the same.
  • phase plugs are usually used to change phases of waves to improve the acoustic performance.
  • the basic sound producing principle of a speaker is: a signal is input to a voice coil for generating magnetic field. By means of attraction and repulsion between the voice coil and fixed magnetic poles, the voice coil generates a back-and-forth piston movement in a magnetic gap to vibrate a diaphragm, pushing on the air to create sound waves.
  • a sound can be heard after the eardrum receives the sound waves.
  • sound waves are not directly scattered outward. Some of the sound waves are sent to a listener after being cross reflected on the diaphragm. Accordingly, standing wave distortion is caused.
  • a phase plug located between the vibrating diaphragm and a throat can make a resultant wave as waves interfering with each other before the throat.
  • the sound waves of a similar interference direction, similar amplitude, and a similar phase are manifested, thereby to obtain a desirable linear effect.
  • phase plugs capable of improving frequency response are designed, and speakers producing sounds of different frequencies in particular need different phase plugs to change phases, so as to improve the acoustic performance.
  • this application provides a combination phase plug, a compression driver having the combination phase plug, and a speaker using same.
  • a combination phase plug of this application includes a first phase plug and a second phase plug.
  • the second phase plug is located under the first phase plug.
  • the first phase plug includes a cone, a plurality of first fins, and a plurality of second fins.
  • the plurality of first fins and the plurality of second fins are located on an outer surface of the cone staggeredly.
  • a first gap exists between any adjacent first fin and second fin.
  • the second phase plug includes a round-disc base, a combining portion, and a plurality of second gaps.
  • the combining portion is located in the center of the round-disc base and the combining portion and the cone can be combined with each other.
  • the second gaps are located between an outer edge of the round-disc base and the combining portion.
  • the first gaps are respectively aligned with the second gaps.
  • the combination phase plug includes a fixing member, and the combining portion and the cone can be fixed together by the fixing member.
  • the cone includes a conical apex and a conical body, and the first fins and the second fins are located on the conical body.
  • the first fins are higher and larger than the second fins.
  • a compression driver provided in this application includes the combination phase plug, a vibrating diaphragm, a magnetic circuit system, and a housing.
  • the housing covers the first phase plug and the second phase plug.
  • the vibrating diaphragm is located under the second phase plug.
  • the magnetic circuit system includes a voice coil.
  • the magnetic circuit system can be powered on to generate electromagnetic induction, so that the voice coil generates a piston movement to vibrate the vibrating diaphragm vertically.
  • the housing includes an opening. When the vibrating diaphragm vibrates vertically, an acoustic path is formed by the first gaps and the second gaps, so that a resultant wave is output from the opening.
  • the vibrating diaphragm is an M-shaped voice diaphragm.
  • the vibrating diaphragm includes a reverse U-shaped fixing portion, and an upper edge of the voice coil is engaged in the reverse U-shaped fixing portion.
  • the vibrating diaphragm is an M-shaped voice diaphragm, and the vibrating diaphragm includes at least one double recessed portion.
  • the compression driver includes a fixing member, and the combining portion and the cone are fixed together by the fixing member, so as to connect the first phase plug and the second phase plug.
  • the conical apex of the first phase plug is near the opening of the housing.
  • This application further provides a speaker including an exponential horn and the compression driver described above.
  • the compression driver is coupled to the exponential horn.
  • the speaker is a horn loudspeaker.
  • an acoustic path formed by the combination phase plug according to this application can improve the compression effect and eliminate phase interference, thereby obtaining a desirable linear effect.
  • FIG. 1 is a schematic three-dimensional diagram of an embodiment of a compression driver according to this application.
  • FIG. 2 is a schematic three-dimensional diagram of an embodiment of a speaker according to this application.
  • FIG. 3 is a schematic three-dimensional exploded diagram of FIG. 1 ;
  • FIG. 4A and FIG. 4B are a top view and a bottom view of a first phase plug and a second phase plug according to this application;
  • FIG. 5 is a partial schematic sectional view of a vibrating diaphragm and a voice coil according to this application;
  • FIG. 6 is a schematic sectional view of FIG. 1 ;
  • FIG. 7 is a diagram of experimental data comparison of a compression driver according to this application.
  • FIG. 1 is a schematic three-dimensional outside view of a compression driver 1 having a combination phase plug according to this application.
  • FIG. 2 is a schematic three-dimensional outside view of a speaker with the compression driver 1 having a combination phase plug according to this application.
  • the compression driver 1 is coupled to an exponential horn 99 and is mainly used to compress and conduct air (further description is provided in the following).
  • the compression driver 1 conducts the compressed air to a listening environment by way of a throat portion T and the exponential horn 99 .
  • the speaker is a horn loudspeaker.
  • the combination phase plug of this application includes a first phase plug 20 and a second phase plug 30 .
  • the second phase plug 30 is located under the first phase plug 20 .
  • the first phase plug 20 includes a cone 21 , a plurality of first fins 22 , and a plurality of second fins 23 .
  • the first fins 22 and the second fins 23 are located on an outer surface of the cone 21 staggeredly.
  • a first gap 24 is provided between any first fin 22 and a second fin 23 adjacent to the first fin.
  • first fins 22 , the second fins 23 , and the first gaps 24 are arranged on the outer surface of the cone 21 in a sequence of the first fin 22 , the first gap 24 , the second fin 23 , the first gap 24 , the first fin 22 , the first gap 24 , and so on.
  • each first fin 22 and each second fin 23 are substantially triangle and each first fin 22 is higher and larger than each second fin 23 .
  • the cone 21 includes a conical apex 21 a and a conical body 21 b .
  • the first fins 22 and the second fins 23 are all located on the conical body 21 b .
  • the fins 22 and 23 can strengthen the structure of the plug and ensure the stability of the structure, so as to improve the acoustic performance.
  • the second phase plug 30 includes: a round-disc base 35 , a combining portion 32 , and a plurality of second gaps 31 .
  • the combining portion 32 is located in the center of the round-disc base 35 .
  • the second gaps 31 are located between an outer edge of the round-disc base 35 and the combining portion 32 .
  • the first gaps 24 are respectively aligned with the second gaps 31 .
  • the combining portion 32 and the cone 21 can be combined with each other.
  • the combination phase plug includes a fixing member 40 .
  • the combining portion 32 and the cone 21 can be fixed together by the fixing member 40 .
  • the bottom of the cone 21 of the first phase plug 20 is provided with a tapped hole 25 .
  • the bottom of the combining portion 32 of the second phase plug 30 is further provided with a tapped hole 33 .
  • the combining portion 32 and the cone 21 may be locked, for example by using a screw 40 (or similarities such as a threaded rod). However, this is merely an example for description, and is not used to limit this application.
  • the combining portion 32 and the cone 21 may be combined and fixed by using an engaging structure, so as to omit a fixing member (for example, a screw or other similarities).
  • a fixing member for example, a screw or other similarities.
  • the first fins 22 and the second fins 23 actually have a same bottom area, so that bottom openings of all the first gaps 24 are the same.
  • the first gaps 24 respectively correspond to and align with the second gaps 31 .
  • the compression driver 1 includes the first phase plug 20 , the second phase plug 30 , a vibrating diaphragm 50 , a magnetic circuit system 60 , and a housing 10 .
  • the housing 10 covers the first phase plug 20 and the second phase plug 30 .
  • the housing 10 includes an opening 11 .
  • the opening 11 may be defined as a throat portion T shown in FIG. 2 .
  • the conical apex 21 a of the first phase plug 20 is near the opening 11 of the housing 10 .
  • the first fins 22 and the second fins 23 are all located on the conical body 21 b .
  • the first gaps 24 are formed between the first fins 22 and the second fins 23 .
  • the first gaps 24 of the first phase plug 20 respectively correspond to and align with the second gaps 31 of the second phase plug 30 .
  • the vibrating diaphragm 50 is located under the second phase plug 30 .
  • the magnetic circuit system 60 includes a voice coil 61 .
  • the second phase plug 30 includes an extended fixing portion 34 .
  • the extended fixing portion 34 may be connected and fixed to both the housing 10 and the magnetic circuit system 60 , so that the combination phase plug and the vibrating diaphragm 50 are fixed between the housing 10 and the magnetic circuit system 60 .
  • a magnetic circuit system 60 can be powered on to generate electromagnetic induction, so that the voice coil 61 generates a piston movement.
  • An electrical signal is applied to the magnetic circuit system 60 to generate the electromagnetic induction, so that the voice coil 61 generates the piston movement by means of attraction and repulsion interaction between the voice coil 61 and a magnetic pole.
  • This is a common magnetic circuit system, and therefore, the detail of the magnet is not described herein.
  • the voice coil 61 generates the piston movement, so that the vibrating diaphragm 50 may vibrate vertically. When the vibrating diaphragm 50 vibrates vertically, air between the vibrating diaphragm 50 and the phase plugs 20 and 30 is compressed.
  • a plurality of acoustic paths is formed by the first gaps 24 and the second gaps 31 that are aligned with each other, and the compressed air flows and towards to the opening 11 .
  • resultant waves are formed at the throat portion T and are output from the opening 11 .
  • a vibrating diaphragm 50 of this application is an M-type voice diaphragm.
  • the vibrating diaphragm 50 includes a reverse U-shaped fixing portion 51 .
  • An upper edge 61 a of a voice coil 61 is engaged in the reverse U-shaped fixing portion 51 to strengthen a combination between the vibrating diaphragm 50 and the voice coil 61 .
  • the vibrating diaphragm 50 includes at least one double recessed portion 52 , 53 .
  • a design of the double recessed portion 52 , 53 enables a force applied to the vibrating diaphragm 50 to be more uniform. And the vibrating diaphragm 50 uniformly bears the force when vibrating vertically, so as to obtain better Kms.
  • a sound pressure experiment is performed by using the compression driver 1 according to this application.
  • the solution of the experiment by using the compression driver 1 according to this application has a much better linear effect (shown by a curve 71 ).
  • an acoustic path formed by the combination phase plug according to this application can improve the compression effect and eliminate phase interference, thereby obtaining a desirable linear effect.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

This application provides a combination phase plug, and a compression driver and a speaker using same. The combination phase plug of this application includes a first phase plug and a second phase plug. The second phase plug is located under the first phase plug. The first phase plug includes a cone, a plurality of first fins, and a plurality of second fins. The first fins and the second fins are located on an outer surface of the cone in a staggered manner. A first gap exists between any first fin and a second fin adjacent to the first fin. The second phase plug includes a round-disc base, a combining portion, and a plurality of second gaps. The combining portion is located in the center of the round-disc base and the combining portion and the cone can be combined with each other. The second gaps are located between an outer edge of the round-disc base and the combining portion. The first gaps are respectively aligned with the second gaps to form a plurality of channels to improve the acoustic performance.

Description

BACKGROUND Technical Field
This application relates to phase plug structures, and in particular, to a combination phase plug, and a compression driver and a speaker using the same.
Related Art
In the field of speakers, phase plugs are usually used to change phases of waves to improve the acoustic performance. The basic sound producing principle of a speaker is: a signal is input to a voice coil for generating magnetic field. By means of attraction and repulsion between the voice coil and fixed magnetic poles, the voice coil generates a back-and-forth piston movement in a magnetic gap to vibrate a diaphragm, pushing on the air to create sound waves. As an eardrum of a human ear is innervated by auditory nerves, a sound can be heard after the eardrum receives the sound waves. However, sound waves are not directly scattered outward. Some of the sound waves are sent to a listener after being cross reflected on the diaphragm. Accordingly, standing wave distortion is caused.
A phase plug located between the vibrating diaphragm and a throat can make a resultant wave as waves interfering with each other before the throat. To improve the compression effect and eliminate phase interference, the sound waves of a similar interference direction, similar amplitude, and a similar phase are manifested, thereby to obtain a desirable linear effect.
Therefore, in the field of compression drivers and speakers, various phase plugs capable of improving frequency response are designed, and speakers producing sounds of different frequencies in particular need different phase plugs to change phases, so as to improve the acoustic performance.
SUMMARY
In view of above, this application provides a combination phase plug, a compression driver having the combination phase plug, and a speaker using same.
A combination phase plug of this application includes a first phase plug and a second phase plug. The second phase plug is located under the first phase plug. The first phase plug includes a cone, a plurality of first fins, and a plurality of second fins. The plurality of first fins and the plurality of second fins are located on an outer surface of the cone staggeredly. A first gap exists between any adjacent first fin and second fin. The second phase plug includes a round-disc base, a combining portion, and a plurality of second gaps. The combining portion is located in the center of the round-disc base and the combining portion and the cone can be combined with each other. The second gaps are located between an outer edge of the round-disc base and the combining portion. The first gaps are respectively aligned with the second gaps.
In an embodiment, the combination phase plug includes a fixing member, and the combining portion and the cone can be fixed together by the fixing member.
In an embodiment, the cone includes a conical apex and a conical body, and the first fins and the second fins are located on the conical body.
In an embodiment, the first fins are higher and larger than the second fins.
A compression driver provided in this application includes the combination phase plug, a vibrating diaphragm, a magnetic circuit system, and a housing. The housing covers the first phase plug and the second phase plug. The vibrating diaphragm is located under the second phase plug. The magnetic circuit system includes a voice coil. The magnetic circuit system can be powered on to generate electromagnetic induction, so that the voice coil generates a piston movement to vibrate the vibrating diaphragm vertically. The housing includes an opening. When the vibrating diaphragm vibrates vertically, an acoustic path is formed by the first gaps and the second gaps, so that a resultant wave is output from the opening.
In an embodiment, the vibrating diaphragm is an M-shaped voice diaphragm. The vibrating diaphragm includes a reverse U-shaped fixing portion, and an upper edge of the voice coil is engaged in the reverse U-shaped fixing portion.
In an embodiment, the vibrating diaphragm is an M-shaped voice diaphragm, and the vibrating diaphragm includes at least one double recessed portion.
In an embodiment, the compression driver includes a fixing member, and the combining portion and the cone are fixed together by the fixing member, so as to connect the first phase plug and the second phase plug.
In an embodiment, the conical apex of the first phase plug is near the opening of the housing.
This application further provides a speaker including an exponential horn and the compression driver described above. The compression driver is coupled to the exponential horn. In this embodiment, the speaker is a horn loudspeaker.
In short, an acoustic path formed by the combination phase plug according to this application can improve the compression effect and eliminate phase interference, thereby obtaining a desirable linear effect.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic three-dimensional diagram of an embodiment of a compression driver according to this application;
FIG. 2 is a schematic three-dimensional diagram of an embodiment of a speaker according to this application;
FIG. 3 is a schematic three-dimensional exploded diagram of FIG. 1;
FIG. 4A and FIG. 4B are a top view and a bottom view of a first phase plug and a second phase plug according to this application;
FIG. 5 is a partial schematic sectional view of a vibrating diaphragm and a voice coil according to this application;
FIG. 6 is a schematic sectional view of FIG. 1; and
FIG. 7 is a diagram of experimental data comparison of a compression driver according to this application.
 DETAILED DESCRIPTION
For ease of reading, “above”, “below”, “left”, and “right specified in this specification according to the drawings are intended to specify a reference relative position between elements rather than limiting this application.
FIG. 1 is a schematic three-dimensional outside view of a compression driver 1 having a combination phase plug according to this application. FIG. 2 is a schematic three-dimensional outside view of a speaker with the compression driver 1 having a combination phase plug according to this application. The compression driver 1 is coupled to an exponential horn 99 and is mainly used to compress and conduct air (further description is provided in the following). The compression driver 1 conducts the compressed air to a listening environment by way of a throat portion T and the exponential horn 99. In an embodiment, the speaker is a horn loudspeaker.
Referring to FIG. 3, the combination phase plug of this application includes a first phase plug 20 and a second phase plug 30. The second phase plug 30 is located under the first phase plug 20. The first phase plug 20 includes a cone 21, a plurality of first fins 22, and a plurality of second fins 23. The first fins 22 and the second fins 23 are located on an outer surface of the cone 21 staggeredly. A first gap 24 is provided between any first fin 22 and a second fin 23 adjacent to the first fin. That is, the first fins 22, the second fins 23, and the first gaps 24 are arranged on the outer surface of the cone 21 in a sequence of the first fin 22, the first gap 24, the second fin 23, the first gap 24, the first fin 22, the first gap 24, and so on. In an embodiment, each first fin 22 and each second fin 23 are substantially triangle and each first fin 22 is higher and larger than each second fin 23. The cone 21 includes a conical apex 21 a and a conical body 21 b. The first fins 22 and the second fins 23 are all located on the conical body 21 b. The fins 22 and 23 can strengthen the structure of the plug and ensure the stability of the structure, so as to improve the acoustic performance.
The second phase plug 30 includes: a round-disc base 35, a combining portion 32, and a plurality of second gaps 31. The combining portion 32 is located in the center of the round-disc base 35. The second gaps 31 are located between an outer edge of the round-disc base 35 and the combining portion 32. The first gaps 24 are respectively aligned with the second gaps 31. The combining portion 32 and the cone 21 can be combined with each other. In an embodiment, the combination phase plug includes a fixing member 40. The combining portion 32 and the cone 21 can be fixed together by the fixing member 40.
Further, refer to a top view of FIG. 4A and a bottom view of FIG. 4B in terms of the first phase plug 20 and the second phase plug 30. The bottom of the cone 21 of the first phase plug 20 is provided with a tapped hole 25. The bottom of the combining portion 32 of the second phase plug 30 is further provided with a tapped hole 33. The combining portion 32 and the cone 21 may be locked, for example by using a screw 40 (or similarities such as a threaded rod). However, this is merely an example for description, and is not used to limit this application. After reading this specification, a person skilled in the art may understand that the combining portion 32 and the cone 21 may be combined and fixed by using an engaging structure, so as to omit a fixing member (for example, a screw or other similarities). As shown in FIG. 4B, the first fins 22 and the second fins 23 actually have a same bottom area, so that bottom openings of all the first gaps 24 are the same. The first gaps 24 respectively correspond to and align with the second gaps 31. In addition, there is an angle (for example from 60 degrees to 89 degrees) between a radial direction of the first gap 24 and the second gap 31 and a normal direction of the round-disc base 35; that is, the radial direction of the first gap 24 and the second gap 31 is not perpendicular to a tangent line of the round-disc base 35.
Referring to FIG. 3, the compression driver 1 provided in this application includes the first phase plug 20, the second phase plug 30, a vibrating diaphragm 50, a magnetic circuit system 60, and a housing 10. The housing 10 covers the first phase plug 20 and the second phase plug 30. The housing 10 includes an opening 11. The opening 11 may be defined as a throat portion T shown in FIG. 2. The conical apex 21 a of the first phase plug 20 is near the opening 11 of the housing 10. The first fins 22 and the second fins 23 are all located on the conical body 21 b. The first gaps 24 are formed between the first fins 22 and the second fins 23. The first gaps 24 of the first phase plug 20 respectively correspond to and align with the second gaps 31 of the second phase plug 30. The vibrating diaphragm 50 is located under the second phase plug 30. The magnetic circuit system 60 includes a voice coil 61.
In an embodiment, the second phase plug 30 includes an extended fixing portion 34. The extended fixing portion 34 may be connected and fixed to both the housing 10 and the magnetic circuit system 60, so that the combination phase plug and the vibrating diaphragm 50 are fixed between the housing 10 and the magnetic circuit system 60.
In addition, referring to FIG. 6, a magnetic circuit system 60 can be powered on to generate electromagnetic induction, so that the voice coil 61 generates a piston movement. An electrical signal is applied to the magnetic circuit system 60 to generate the electromagnetic induction, so that the voice coil 61 generates the piston movement by means of attraction and repulsion interaction between the voice coil 61 and a magnetic pole. This is a common magnetic circuit system, and therefore, the detail of the magnet is not described herein. The voice coil 61 generates the piston movement, so that the vibrating diaphragm 50 may vibrate vertically. When the vibrating diaphragm 50 vibrates vertically, air between the vibrating diaphragm 50 and the phase plugs 20 and 30 is compressed. In this case, a plurality of acoustic paths is formed by the first gaps 24 and the second gaps 31 that are aligned with each other, and the compressed air flows and towards to the opening 11. Finally, resultant waves are formed at the throat portion T and are output from the opening 11.
Referring to FIG. 5, a vibrating diaphragm 50 of this application is an M-type voice diaphragm. The vibrating diaphragm 50 includes a reverse U-shaped fixing portion 51. An upper edge 61 a of a voice coil 61 is engaged in the reverse U-shaped fixing portion 51 to strengthen a combination between the vibrating diaphragm 50 and the voice coil 61. In an embodiment, the vibrating diaphragm 50 includes at least one double recessed portion 52, 53. A design of the double recessed portion 52, 53 enables a force applied to the vibrating diaphragm 50 to be more uniform. And the vibrating diaphragm 50 uniformly bears the force when vibrating vertically, so as to obtain better Kms.
Referring to FIG. 7, a sound pressure experiment is performed by using the compression driver 1 according to this application. As shown in FIG. 7, compared with a control group having only one path (shown by a curve 72), the solution of the experiment by using the compression driver 1 according to this application has a much better linear effect (shown by a curve 71).
In short, an acoustic path formed by the combination phase plug according to this application can improve the compression effect and eliminate phase interference, thereby obtaining a desirable linear effect.
Although this application is disclosed as above by using the embodiments, the embodiments are not intended to limit this specification. Any person skilled in the art can make some variations and modifications without departing from the spirit and scope of this application. Therefore, the protection scope of this application should be subject to the scope defined by the appended claims.

Claims (10)

What is claimed is:
1. A combination phase plug, comprising:
a first phase plug, comprising:
a cone;
a plurality of first fins, located on an outer surface of the cone; and
a plurality of second fins, located on the outer surface of the cone, wherein the first fins and the second fins are arranged staggeredly, and a first gap is provided between any adjacent first fin and second fin; and
a second phase plug, located under the first phase plug, and comprising:
a round-disc base;
a combining portion, located in the center of the round-disc base, wherein the combining portion and the cone may be combined with each other; and
a plurality of second gaps, located between an outer edge of the round-disc base and the combining portion, wherein
the first gaps are respectively aligned with the second gaps.
2. The combination phase plug according to claim 1, wherein the combination phase plug comprises a fixing member, and the combining portion and the cone are fixed together by the fixing member.
3. The combination phase plug according to claim 1, wherein the cone comprises a conical apex and a conical body, and the first fins and the second fins are located on the conical body.
4. The combination phase plug according to claim 1, wherein the first fins are higher and larger than the second fins.
5. A compression driver, comprising:
a housing, having an opening;
a first phase plug, comprising:
a cone;
a plurality of first fins located on an outer surface of the cone; and
a plurality of second fins, located on the outer surface of the cone, wherein the first fins and the second fins are arranged staggeredly, and a first gap is provided between any adjacent first fin and second fin; and
a second phase plug, located under the first phase plug, and comprising:
a round-disc base;
a combining portion, located in the center of the round-disc base, wherein the combining portion and the cone can be combined with each other; and
a plurality of second gaps, located between an outer edge of the round-disc base and the combining portion, wherein
the first gaps are respectively aligned with the second gaps;
a vibrating diaphragm, located under the second phase plug; and
a magnetic circuit system, comprising a voice coil, wherein the magnetic circuit system can be powered on to generate electromagnetic induction, so that the voice coil generates a piston movement to vibrate the vibrating diaphragm vertically; and
the housing covers the first phase plug and the second phase plug, and when the vibrating diaphragm vibrates vertically, an acoustic path is formed by the first gaps and the second gaps, so that a resultant wave is output from the opening.
6. The compression driver according to claim 5, wherein the vibrating diaphragm is an M-shaped voice diaphragm, the vibrating diaphragm comprises a reverse U-shaped fixing portion, and an upper edge of the voice coil is engaged in the reverse U-shaped fixing portion.
7. The compression driver according to claim 5, wherein the vibrating diaphragm is an M-shaped voice diaphragm, and the vibrating diaphragm comprises at least one double recessed portion.
8. The compression driver according to claim 5, wherein the compression driver comprises a fixing member, and the combining portion and the cone are fixed together by the fixing member.
9. The compression driver according to claim 5, wherein the cone comprises a conical apex and a conical body, the conical apex is near the opening, the first fins and the second fins are located on the conical body, and the first fins are higher and larger than the second fins.
10. A speaker, comprising:
an exponential horn; and
the compression driver according to claim 1, wherein the compression driver is coupled to the exponential horn.
US16/001,492 2017-12-06 2018-06-06 Combination phase plug, and compression driver and speaker using same Expired - Fee Related US10405088B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201711274389.9 2017-12-06
CN201711274389.9A CN109889960A (en) 2017-12-06 2017-12-06 It combined type phase plug and its applies in compressed drive and loudspeaker
CN201711274389 2017-12-06

Publications (2)

Publication Number Publication Date
US20190174224A1 US20190174224A1 (en) 2019-06-06
US10405088B2 true US10405088B2 (en) 2019-09-03

Family

ID=64556661

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/001,492 Expired - Fee Related US10405088B2 (en) 2017-12-06 2018-06-06 Combination phase plug, and compression driver and speaker using same

Country Status (3)

Country Link
US (1) US10405088B2 (en)
EP (1) EP3496419B1 (en)
CN (1) CN109889960A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021071488A1 (en) * 2019-10-10 2021-04-15 Harman International Industries, Incorporated Omnidirectional loudspeaker and compression driver therefor
JP1657874S (en) * 2019-10-25 2020-04-20
CN112839287B (en) * 2020-07-30 2022-06-24 赵淼 Piezoelectric ceramic diaphragm, vibration unit and sound device
US11445303B2 (en) 2020-10-16 2022-09-13 Harman International Industries, Incorporated Omnidirectional loudspeaker and compression driver therefor
WO2022115106A1 (en) 2020-11-26 2022-06-02 Harman International Industries, Incorporated Omnidirectional loudspeaker with asymmetric vertical directivity
JP7563297B2 (en) * 2021-05-31 2024-10-08 ヤマハ株式会社 Speaker unit
CN113329310B (en) * 2021-06-03 2025-11-25 嘉善迪蒙尔电子有限公司 A loudspeaker with a dual-phase modulator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8181736B2 (en) * 2008-08-14 2012-05-22 Harman International Industries, Incorporated Phase plug and acoustic lens for direct radiating loudspeaker
US10038954B2 (en) * 2016-08-22 2018-07-31 Harman International Industries, Incorporated Compression driver and phasing plug assembly therefor

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157741A (en) * 1978-08-16 1979-06-12 Goldwater Alan J Phase plug
JPH07231494A (en) * 1994-02-18 1995-08-29 Asahi Tec Corp Phase plug for speaker and its manufacture
US20050041831A1 (en) * 2003-08-22 2005-02-24 Stiles Enrique M. Electromagnetic transducer motor structure with radial thermal extraction paths
US7920712B2 (en) * 2005-06-10 2011-04-05 Loud Technologies Inc. Coaxial mid-frequency and high-frequency loudspeaker
US8036408B2 (en) * 2005-12-22 2011-10-11 Harman International Industries, Incorporated Phasing plug for a compression driver
JP4839890B2 (en) * 2006-02-28 2011-12-21 ヤマハ株式会社 Wide directional speaker system
GB2437126B (en) * 2006-04-13 2011-02-09 Gp Acoustics Phase plug
GB2437125B (en) * 2006-04-13 2011-02-09 Gp Acoustics Phase plug for compression driver
CN201114660Y (en) * 2007-09-21 2008-09-10 丁峰 A speaker and alarming device with illuminant body
GB2470362B (en) * 2009-05-19 2013-03-20 Gp Acoustics Uk Ltd Cone loudspeaker
US8989419B2 (en) * 2012-01-18 2015-03-24 Curtis E. Graber Phase plug with axially twisted radial channels
CN203039890U (en) * 2012-12-23 2013-07-03 天津中环真美声学技术有限公司 Annular phase plug of backward radiation type compression drive
CN204425646U (en) * 2015-03-04 2015-06-24 广州市花都百威电子有限公司 A kind of Novel tapered loud speaker
CN205726389U (en) * 2016-04-18 2016-11-23 乐视控股（北京）有限公司 Speaker and electronic equipment
CN106507254B (en) * 2016-11-30 2022-07-08 唐永均 Loudspeaker horn
CN207652686U (en) * 2017-12-06 2018-07-24 惠州超声音响有限公司 It combined type phase plug and its applies in compressed drive and loud speaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8181736B2 (en) * 2008-08-14 2012-05-22 Harman International Industries, Incorporated Phase plug and acoustic lens for direct radiating loudspeaker
US10038954B2 (en) * 2016-08-22 2018-07-31 Harman International Industries, Incorporated Compression driver and phasing plug assembly therefor

Also Published As

Publication number Publication date
CN109889960A (en) 2019-06-14
US20190174224A1 (en) 2019-06-06
EP3496419A1 (en) 2019-06-12
EP3496419B1 (en) 2021-01-13

Similar Documents

Publication Publication Date Title
US10405088B2 (en) Combination phase plug, and compression driver and speaker using same
CN111182426B (en) Bone conduction loudspeaker and compound loudspeaker
US10264349B2 (en) Combined-type phase plug, and compression driver and speaker using same
CN204425650U (en) Piezoelectric ceramic double-frequency earphone structure
EP3905713B1 (en) Loudspeaker assembly and loudspeaker
JP3198475U (en) Piezoelectric ceramics dual-band bass-enhanced earphones
US9288600B2 (en) Sound generator
US7275621B1 (en) Skew horn for a loudspeaker
CN114449420B (en) Speaker and electronic device
CN204498328U (en) Piezo Ceramic Dual Frequency Bass Enhanced Headphones
CN109788411A (en) A kind of electroacoustic transducer and moving-coil plate compounding loudspeaker
WO2022222489A1 (en) Sound-generating device
CN111698620B (en) An electronic device
CN107071669A (en) A kind of loudspeaker earpiece and mobile terminal
CN205123990U (en) Bone conduction loudspeaker
KR100769885B1 (en) Electronic sound transducer
CN107333206B (en) Integral sound box and control method thereof
CN207652686U (en) It combined type phase plug and its applies in compressed drive and loud speaker
WO2020011372A1 (en) Acoustic radiation reproduction
CN205946113U (en) Active speaker
EP2129164A1 (en) Dipole loudspeaker with acoustic waveguide
CN205726389U (en) Speaker and electronic equipment
RU108703U1 (en) ELECTRODYNAMIC SPEAKER
Kumar et al. Heavy hypersonic dual acoustic system
US20240284110A1 (en) Earphones and transducer devices thereof

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: PREMIUM LOUDSPEAKERS (HUI ZHOU) CO., LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHEN, ZHI;REEL/FRAME:046403/0415

Effective date: 20180531

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

AS Assignment

Owner name: TYMPHANY ACOUSTIC TECHNOLOGY (HUIZHOU) CO., LTD.,

Free format text: CHANGE OF NAME;ASSIGNOR:PREMIUM LOUDSPEAKERS (HUI ZHOU) CO., LTD.;REEL/FRAME:049121/0317

Effective date: 20181225

Owner name: TYMPHANY ACOUSTIC TECHNOLOGY (HUIZHOU) CO., LTD., CHINA

Free format text: CHANGE OF NAME;ASSIGNOR:PREMIUM LOUDSPEAKERS (HUI ZHOU) CO., LTD.;REEL/FRAME:049121/0317

Effective date: 20181225

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20230903